Window screen



"Mar. 27, 1923.

J. M. TROMBLY WINDOW SCREEN Filed Nov.

NEY.

ATTOR Patented Mar. 27, 1923.

UNETED STATEfi JEREMIAH M. TROMBLY, OF ST. ALBANS, VERMONT.

WINDOW SCREEN.

Application filed November 28, 1921.

T 0 all whom it may concern Be it known that I, JEREMIAH M. TROM- BLY, a citizen of the United States of America, residing at St. Albans, in the county of Franklin and State of Vermont, have invented certain new and useful Improvements in Window Screens, of which the following is a specification.

This invention relates to improvements in window screens.

It has for an object to provide a con struction which can be readily inserted and removed from the window frame.

A further object is to provide a screen frame construction that can be placed either in the upper or lower part of the window frame.

A further object is to provide a screen frame construction that is durable and one that will not readily get out of repair.

Broadly considered my improvement comprises a plurality of channel shaped runway members formed of sheet metal of suitable thickness and permanently secured to the window frame. The inner ends of the members being nested or located one within the other. The channel shaped members which are located at the lower part of the window frame being formed with openings to permit the insertion and removal of the window screen sections.

Referring to the drawings;

Fig. 1 is an elevational view, looking from the outside of the window frame, showing the upper and lower sections of the screen in place and illustrating the channel shaped members of thin sheet metal that are located on the inner surfaces of the window frame and the manner of securing the same in place.

Fig. 2 is a vertical sectional View on the line 2-2 of Fig. 1 showing the upper and lower window sash in section and the upper and lower sections of the window screen, also the channel shaped members in which the edges of the screen sections are located.

Fig. 3 is a detail sectional view on the line 33 of Fig. 2 showing the caps or con-v necting pieces for closing the openings for inserting and removing the screen sections and the openlngs 1n one of the side strlps of the channel shaped members.

Fig. 4 is an enlarged detail sectional View on the line 4-4 of Fig. 1 showing the lower Serial No. 518,220.

edge of the upper screen section or frame and the upper edge of the lower screen section in over-lapping arrangement to close the opening between the screen sections also to retain the lower edge of the upper screen section in place. This View clearly illustrates the inner ends of the channel shaped members one within the other.

Fig. 5 is a detail sectional view on the line 55 of Fig. 1 showing the runway or channel for the edge of a screen frame.

Fig. 6 is a detail view of the cap'piece.

Fig. 7 is a sectional view on the line 7-7, Fig. 4.

Fig. 8 is an enlarged view of a portion of the lower channel shaped member showing the opening.

F ig. 9 is a perspective detail view of a portion of the lower channel shaped member showing the opening and attaching ear pieces and Fig. 10 is a perspective view of the entire lower channel shaped member.

Referring to the drawings in detail;

The window frame as a whole is indicated by the reference numeral 1. The upper sash is indicated at 2 and the lower sash at 3. 4 indicates the upper screen section and 5 the lower screen section. These sections are composed of the usual wire netting material. The upper and lower edges of the wire netting of each section. are re-enforced by means of the U- shaped or bent strips 6 and 7 for providing a rigid structure at the upper and lower edges. The opposite sides of the wire screen is left flexible that is to say it is not provided with a stiffening strip the same as at the upper and lower edges.

For receiving and guiding the upper and lower screen sections runway or channel shaped members are provided. These members are formed from strips of thin metal as sheet iron that are secured to the opposite inner sides of the window frame. A detail view of the lower member is shown in Fig. 10. 8 and 8' designatethe oppositely located portions of the upper member, 8 the bottom of the member, 9 and 9 the oppositely located sides of the lower channel shaped member; The bottom part of the lower member is indicated at 9 The upper and lower channel members are secured to the upper cross piece 10 and the lower or window sill portion 11 of the window frame by means of the bent or angular portions 12 and 13 respectively and the screws 1 1 and which pass through the bent or angular portions 12 and 13. These members are slidably arranged in over-lapping arrangement at their inner or meeting ends as indicated in Fig. 1 at 16. The lower channel-shaped members are formed with openings 17 and 18 indicated in Figs. 1, 2, 3, 8, 9, and 10. These openings are for the purpose of inserting and removing the upper and lower flexible screen sections after removing the caps 19. As indicated in 2 where the lower screen section 5 is being drawn through the openings 17 and 18. Since the opposite side edges of these sections are flexible and not provided with a binding or stiffening strip both the upper and lower screen sections can be readily bent and drawn through these openings as readily understood from Fig. 2.

For the purpose of holding or retaining the upper screen section in place the lower edges of the outer portion 8 are bent or formed into hooks as indicated. at (see Fig. 4) which receives the lower binding strip 6.

It is obvious that when the upper screen section 4 is pushed upward through the openings 17 and 18 that this section should be retained in place by some suitable means and I have found that the hooks 20 are reliable for this purpose.

The upper portion of the top screen, in dicated at 4, will be partially retained in place by reason of the frictional engagement of the opposite side edges of the wire cloth against the inner surfaces of the oppositely located portions 8 and 8. It is to be understood that the width between the inner surfaces of the portions 8 and 8' is only a very little greater than the thickness of the bent strips 6; the frictional resistance assisted by the hooks 20 therefore serves to properly retain the upper portion of the top screen in place as I have repeatedly found in practice. In fact, considerable effort is necessary to insert and remove the screen sections on account of the more or less buckling or bending of the wire screen. The hook 20 serves the further purpose, as stated below, to close the space between the meeting screen sections and not to wholly support the upper screen section.

In order to prevent the flies from gaining access to the room after the screens are inserted theupper binding strip 7 of the lower section 5 is located and inserted so as to engage the lower binding strip 6 of the upper screen section as shown in Fig. 4 whereby the screen section 4 is locked in place. In order to remove the upper screen section 4 it is necessary to first remove the lower section by sliding it upward in the channel until the lower binding strip 7 is opposite the openings 17 and 18 when this section of screen may be withdrawn. The upper section may be withdrawn by first removing it from the hooks 20 and pulling it downward in the channel and through the openings 17 and 18.

It is to be understood that the openings are closed by the caps 19 when not in use. One of the important features of the present invention is that either the upper or lower channel shaped sections may be used independent of the other since they are both alike as to size and construction. The channel shaped members are understood to be permanently secured to the window frame. The members are of such length that they may be cut to fit window frames of different sizes as indicated by the over-lapping relation at 16. The width of the upper and lower screen section is such that they may be inserted in window frames of different widths, since their opposite flexible edges as indicated by the dotted lines 4t and 5 do not entirely fill the channel or grooves they may be slid or moved laterally in the frame as desired.

The cars 21 for attaching the lower channel shaped members are formed when the openings 17 and 18 are cut.

The ears 22 are formed by striking up some of the metal of the upper channel shaped members.

The cap pieces 19 are formed with the grooves 19 to receive the oppositely located edges 23 and 24.

It is obvious that in case only the lower screen is to be used, it would be necessary to attach only one set of guides or channel shaped pieces to the window frame. lVhen only the lower screen is to be used, the upper right hand channel shaped piece would be attached to the lower left hand side of the window frame and the upper left hand channel shaped piece would be at tached to the lower right hand side of the window frame. The screen 5 would then be inserted in the open upper ends of the two channel shaped members. The binder strip 7 would then rest against the hook shaped parts 20 which would have the effect of maintaining the binder part 7 close against the outside surface of the lower rail of the upper sash thus preventing entrance of the flies.

It is also obvious that the lower screen could then be readily raised and lowered for closing the blinds and for cleaning the window sills if desired.

It is also obvious that the channelshaped runways and the openings 17 and 18 may be reversed; these openings would then be on the inside instead of on the outer side of the window frame, whereby the screen may be conveniently inserted from the inside.

What I claim is:

1. In a window screen construction, the combination, of upper and lower screen sections, each provided at its upper and lower edge only with respective stiffening bars, and runways attached to the inner vertical sides of the window frame, each runway being formed from two U-shaped channel members having their inner ends inserted one within the other, the upper channel members on the sides of the window frame having means to receive and partially support the upper screen section.

2. A channel shaped member designed for attachment to a window frame, said member having an ear portion at one end for attaching the same to a window frame and another ear portion substantially intermediate of its length to provide an additional attachment to the window frame, the ear portions being struck up-from one of the side portions only of the channel shaped member to provide an entrance opening for inserting the screen sections when the members are assembled.

3. A window screen construction comprising upper and lower channel shaped members designed for attachment to a window frame, screen sections slidably located in said members, means comprising a hookshaped lower edge on the upper members for partially retaining the upper screen section against movement in the upper memher, said screen sections each having a bar or stiffening device which over-lap each other for closing the space between their meeting adjacent edges as described.

4. A window screen construction comprising in combination upper and lower U- shaped channel members which are attached to the window frame and having their overlapping meeting ends inserted one within the other, flexible screen sections in said channel shaped members, the lower channel shaped members having openings to permit the screen sections to be inserted and removed from the channel shaped members, and devicesfor attaching the members to a window frame.

5. In a window screen construction, a pair of channel-shaped members designed for attachment to the opposite sides of the window frame, the lower ends of the members being bent to form a hook-shaped portion to receive and partially support the upper screen sections for retaining the same therein, a second pair of channel shaped members, the hooked shaped portion being located in the upper ends of the second pair of said members.

6. A channel shaped member designed for attachment to a window-frame for receiving a flexible screen section, said member having a port-ion of one of the side portions cut away for inserting and removing thescreen section, and a removable cap piece for closing the cut away portion, as described.

7. A window screen construction comprising in combination upper and lower channel shaped members to receive the opposite edges of screen sections, said screen sections having their upper and lower edges only provided with a binding or stiffening part, said members being designed to be placed in telescoping relation for retaining the same in place, and means comprising integral hook portions on the upper member for partially retaining the upper screen section in place.

8. A window screen construction comprising in combination with a window frame, of channel shaped members, said members each having an ear at one end and a struck up ear intermediate its length, flexible screen sections located in the members, and openings in some of the members for inserting and removing the screens, caps for the openings having channels or grooves at their opposite edges for receiving the opposite edges of the cut out portions of the channelshaped members, as described.

9. In a window screen construction, the combination, of two pairs of channel shaped members, means comprising ear portions for attaching the same to the upper and lower ends and sides of the window frame, the pairs of said members having their inner meeting ends telescopically arranged, the

lower ends of the upper pair being formed with hooks to receive and partially support the upper screen section, the lower members having openings for inserting screen sections, sai sections being arranged in overlapping relation within the telescoping ends of the members for closing the space in these ends, as described.

JEREMIAH M. TROMBLY. 

